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Paper Details

On The Dipole Moment of Polar Molecules

Ruchitha Goonatilake and Raghuvarun Reddy Mutyala

Journal Title:Journal of Chemical, Biological and physical sciences

In this experiment, the dipole moments of 1,2- and 1,3- dichlorobenzene were explored. This was done indirectly, by measuring the frequency to obtain the dielectric constant, and the index of refraction. The dipole moment of both molecules was determined using these values, through Hegestrands and Guggenheims methods. The values obtained from Hegestrands method were 2.77 D for 1, 2-dichlorobenzene and 1.89 D for 1, 3-dichlorobenzene. From Guggenheims method, the values of 0.21 D and 0.14 D were obtained for 1, 2- and 1, 3-dichlorobenzne, respectively. The dipole moment was found to decrease as the substituents been farther apart supporting the predictions. In addition, the data indicated that the experiment was performed with moderate success depicting its general trend.